The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-332-3190, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-332-3190 |
| Primary Part Number | BM3200-6A020 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.210 INCHES NOMINAL IN |
| Fastener Length | 1.650 INCHES NOMINAL IN |
| Thread Length | 0.400 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Features Provided | CETYL ALCOHOL LUBRICANT |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.250 INCHES NOMINAL IN |
| Width Between Flats | 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN |
| Grip Diameter | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Surface Treatment | CHROMATE AND NICKEL AND CADMIUM OVERALL |
| Minimum Tensile Strength | 132000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP H11 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| BM3200-6A020 | Huck International, Inc (USA) |
| VAL23611-6D020 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| AIC2263A06U020 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| STSBG000A06U020 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| 11797A06U020 | Reid Products Inc. Dba Reid Products Inc (USA) |
| STSBG000A06U020 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| PBF1041A6U020 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| VS2978A06U020 | 5/9 Secondary reference U.S. Government activity |
| STSBG000A06U020 | 5/2 Secondary reference U.S. Government activity |
| STSBG000A06U020 | 3/2 Design control — primary reference U.S. Government activity |
| VS2978A06U020 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| BM3200-6A020 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-332-3190 is a Bolt,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-332-3190 has 7 manufacturer part numbers on file: BM3200-6A020 (Huck International, Inc), VAL23611-6D020 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), AIC2263A06U020 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), STSBG000A06U020 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), 11797A06U020 (Reid Products Inc. Dba Reid Products Inc) and 2 more.
Key specifications for BM3200-6A020: Head Height: 0.210 INCHES NOMINAL IN; Fastener Length: 1.650 INCHES NOMINAL IN; Thread Length: 0.400 INCHES NOMINAL IN; Nominal Thread Diameter: 0.375 INCHES IN. 16 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.